सर्भेक्षण – Surveying MCQ
सर्भेक्षण – सिभिल इन्जिनियरिङ
Surveying · Civil Engineering · १,५६५ प्रश्न
१,५६५ प्रश्न उपलब्ध। मोड छान्नुहोस्:
सर्भेक्षण: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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In the equatorial system of celestial coordinates, 'right ascension' is measured:
सही उत्तर: क) Eastward along the celestial equator from the first point of Aries
Right ascension, together with declination, fixes a star's position; it is reckoned eastward from the vernal equinox.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The visible part of the electromagnetic spectrum lies approximately between:
सही उत्तर: घ) 0.4 and 0.7 µm
Visible light spans roughly 0.4 µm (blue) to 0.7 µm (red).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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'Atmospheric windows' in remote sensing are:
सही उत्तर: ग) Wavelength regions in which the atmosphere transmits electromagnetic energy with little absorption
Sensors are designed to operate in windows such as the visible, parts of the infrared and microwave regions.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 'panchromatic' satellite image is:
सही उत्तर: ख) A single-band image recorded over a broad range of visible wavelengths, shown in black and white
Panchromatic sensors record one broad band, usually giving finer spatial resolution than the multispectral bands.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A shapefile, a widely used GIS data format, stores:
सही उत्तर: क) Vector features (points, lines or polygons) with their attributes
The Esri shapefile is a vector format made of several files (.shp, .shx, .dbf, etc.).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In GIS, 'attribute data' means:
सही उत्तर: घ) Descriptive (non-spatial) information about features, such as name, type or population
Attributes are stored in tables linked to spatial features, e.g. road class or parcel owner.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A total station measures a slope distance of 200.00 m at a zenith angle of 80°. The horizontal distance is about:
सही उत्तर: ग) 196.96 m
Horizontal distance = slope distance × sin(zenith angle) = 200 × sin 80° ≈ 196.96 m.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The 'ephemeris' broadcast by a GNSS satellite contains:
सही उत्तर: ख) Data describing the satellite's orbit, used to compute its position at any time
Broadcast ephemeris parameters let the receiver calculate where the satellite is when the signal was transmitted.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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'Static' GNSS relative positioning, in which receivers remain stationary on points for long sessions, is mainly used for:
सही उत्तर: क) High-precision control surveys and long baselines
Long simultaneous observations allow ambiguities and errors to be resolved, giving millimetre-to-centimetre accuracy for control networks.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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On a tilted aerial photograph, image displacement due to tilt is radial from the:
सही उत्तर: घ) Isocentre
Tilt displacement is radial from the isocentre, whereas relief displacement is radial from the nadir point.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
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